Precast Hybrid Moment Resistant Frames
earthquake disasters around the globe have prompted research into structural elements that can remain structural integrity after seismic activity.
A new framing system has been developed by Pankow Builders that can absord seismic energy independant of the structural members and delivers a superior post elastic response.
The PMHR Frame consists of a column and beam connection that joins in a both elestic and non-elastic method, this way the seismic energy is concentrated in the connection and not throughout the structural members. Throughout testing the connection remained minimally damaged and no such damage to the actual structure in a 4% shift.
The concept isolates and separates the strength and energy absorption components of the joint, whilst steel within the joint is able to resist the live, dead and seismic loads of the building.
This provides much more security and peace of mind to people living in earthquake prone areas and very minimal damage would occur to the structure leaving it inhabitable after a disaster and possibly with very little to no repairs.
Throughout research the technology has been so succesful that it has been used in many projects throughout the United States including a 40-storey apartment high-rise in san Francisco.
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